94 lines
2.2 KiB
Rust
94 lines
2.2 KiB
Rust
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use std::{
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fs::File,
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io::{self, Read, Seek, SeekFrom},
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path::PathBuf,
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};
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use log::debug;
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use serde::{Deserialize, Serialize};
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use ureq::{
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Error::Other,
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http::{HeaderValue, StatusCode},
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};
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use super::{Alias, SharryAlias};
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#[derive(Serialize, Deserialize, Debug)]
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pub struct FileUploading {
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pub(super) path: PathBuf,
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pub(super) size: usize,
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pub(super) uri: String,
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pub(super) offset: usize,
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}
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pub enum UploadError {
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FileIO(io::Error),
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Request,
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ResponseStatus,
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ResponseOffset,
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}
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pub enum ChunkState {
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Ok(FileUploading),
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Err(FileUploading, UploadError),
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Finished,
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}
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impl FileUploading {
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fn read_chunk(&self, chunk_size: usize) -> io::Result<Vec<u8>> {
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let offset = u64::try_from(self.offset).map_err(io::Error::other)?;
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let mut f = File::open(&self.path)?;
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f.seek(SeekFrom::Start(offset))?;
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let mut bytes = vec![0; chunk_size];
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let read_len = f.read(&mut bytes)?;
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bytes.truncate(read_len);
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Ok(bytes)
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}
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pub fn upload_chunk(
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mut self,
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http: &ureq::Agent,
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alias: &Alias,
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chunk_size: usize,
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) -> ChunkState {
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let chunk = match self.read_chunk(chunk_size) {
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Err(e) => return ChunkState::Err(self, UploadError::FileIO(e)),
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Ok(value) => value,
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};
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let Ok(res) = (http.patch(&self.uri))
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.sharry_header(alias)
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.header("Upload-Offset", self.offset)
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.send(&chunk)
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else {
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return ChunkState::Err(self, UploadError::Request);
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};
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if res.status() != StatusCode::NO_CONTENT {
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return ChunkState::Err(self, UploadError::ResponseStatus);
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}
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let Some(Ok(Ok(res_offset))) = (res.headers().get("Upload-Offset"))
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.map(HeaderValue::to_str)
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.map(|v| v.map(str::parse::<usize>))
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else {
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return ChunkState::Err(self, UploadError::ResponseOffset);
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};
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if self.offset + chunk.len() != res_offset {
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return ChunkState::Err(self, UploadError::ResponseOffset);
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}
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self.offset += res_offset;
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if self.offset == self.size {
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return ChunkState::Finished;
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}
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ChunkState::Ok(self)
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}
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}
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